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LedgerBrain x402 KYA KYT KYE Compliance API

Blockchain PAYMENT-READY

payment-ready until 2026-08-20

x402 pay-per-use KYA, KYT, and KYE crypto compliance API for AI agents. Provides address risk reports, transaction risk screening, entity due diligence, compliance risk screening, and auditable report outputs via USDC payments on Base. No LedgerBrain API key required for x402 endpoints.

Pay from $0.10 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

first settlement 2026-06-11 · $20.20 all-time · settled via coinbase

BASE URL https://api.ledgercore.io │ WEBSITE https://ledgerbrain.io │ ENDPOINTS 3 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-06-12 │ MONITORED SINCE 2026-06-12

ASSESSMENT

updated 4h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 100%

uptime 24h: 100%
uptime 7d: 100%
uptime 30d: 100%
uptime 90d: 100%
response p95: 934ms
avg response: 425ms
total checks: 2,737

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.10 (p86 in Blockchain)

price (min): $0.10
category percentile (min): p86 in Blockchain
endpoints / prices: 3 / 1
model: flat
stability: 50%

risk clean

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age: -
registrar: -
hosting: custom
domain created: ---

Identity facts, not a risk score.

traction $2.20 30d · 3 buyers

volume 30d: $2.20
buyers 30d: 3
settlements 30d: 22
first settlement: 2026-06-11
last settlement: 2026-08-11
top buyer share: 55% of 30d volume
trend 7d vs 30d: 0.19x the 30d daily rate
networks: eip155:8453
volume all-time: $20.20
settlements all-time: 40
median settlement 30d: $0.10
max settlement 30d: $0.10
settled via: coinbase ($2.20, 22 tx)

Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.

Top buyer share is a concentration signal, not part of the ranking score.

WHAT IT DOES

ai-derived

Provides blockchain compliance reports including KYA, KYT, KYE, and KYAg for crypto addresses, transactions, entities, and agents.

category: blockchain-compliance
in: body

complianceblockchainrisk-assessmentcryptodue-diligence

AI-generated summary. The measured data is never altered by it.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD	PATH	PRICE	NETWORK	ASSET	402 CHANNEL
POST	/api/v1/x402/kya/report	$0.10	Base	USDC	header
POST	/api/v1/x402/kye/report	$0.10	Base	USDC	header
POST	/api/v1/x402/kyt/report	$0.10	Base	USDC	header

3 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /api/v1/x402/kya/report returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request

curl -i -X POST 'https://api.ledgercore.io/api/v1/x402/kya/report'

// 402 response (captured by monitor) · 3 payloads · click to expand

[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.ledgercore.io/api/v1/x402/kye/report",
      "mimeType": "application/json",
      "description": "KYE entity profile report — pay per use via x402"
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.ledgercore.io/api/v1/x402/kya/report",
      "mimeType": "application/json",
      "description": "KYA address risk report — pay per use via x402"
    },
    "x402Version": 2
  },
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x5a10b3E835cDeD940B9c0bd39A2Bc2e5A5f2d068",
        "amount": "100000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://api.ledgercore.io/api/v1/x402/kyt/report",
      "mimeType": "application/json",
      "description": "KYT transaction risk report — pay per use via x402"
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 7d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/ledgerbrain-x402-kya-kyt-kye-compliance-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.

UPTIME

7d UPTIME 100%

RESPONSE TIME

AVG RESP 426ms

PRICE (captured 402, USD)

Median across 3 endpoints. Use the selector to isolate one.

SUB-SCORES (uptime + x402 compliance)

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)

price percentile in Blockchain

site signals present (of 6)

Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.

VOLUME (on-chain settlement, USD)

DISTINCT BUYERS

COMPLIANCE

14/14 checks pass · grade A

last 402 captured 2026-07-17 · last up 2026-08-13

402 payload captured
accepts[] array present
payTo address recoverable
payTo at accepts[0].payTo (conformant shape)
payTo is a valid on-chain address
atomic price declared
atomic price in a sane range
asset (token) address declared
network resolves to CAIP-2
payment scheme declared
served over HTTPS
declares the current x402 version (2)
EIP-712 domain parameters present on every EVM entry
x402 v2 envelope delivered in the payment-required header

SITE PILLARS

homepage reachable
openapi doc
pricing page
llms.txt
robots.txt
terms page

recent checks (18) live · click to expand

TIME STATUS RESP CAUSE

16:10:15 UTC ● OK 338ms

15:54:17 UTC ● OK 464ms

15:38:14 UTC ● SLOW 771ms

15:22:17 UTC ● OK 568ms

15:06:19 UTC ● OK 614ms

14:50:19 UTC ● OK 583ms

14:34:11 UTC ● OK 228ms

14:18:19 UTC ● OK 635ms

14:02:17 UTC ● OK 422ms

13:46:18 UTC ● OK 589ms

13:30:16 UTC ● OK 317ms

13:14:18 UTC ● OK 312ms

12:58:21 UTC ● SLOW 1105ms

12:42:17 UTC ● SLOW 852ms

12:26:16 UTC ● OK 409ms

12:10:14 UTC ● OK 346ms

11:54:18 UTC ● OK 591ms

11:38:17 UTC ● OK 521ms

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[ update this listing ]

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